Differential type setting means



Feb. 6, 1951 F. GANTNER ETAL 2,540,193

DIFFERENTIAL TYPE SETTING MEANS Original Filed Feb. 10, 1942 2Sheets-Sheet 1 FIG FREDERICK GANTNER JOSEPH J. KLOSTERMAN,DECD

BY MARY KLOSTERMAN EXEGUTRIX AND JOHN B. GEERS,DECEASED BY JOHN H. MOREADMINISTRAT m NTORS THEIR ATTORNEY Feb. 6, 1951 F. GANTNER EI'AL2,540,198

DIFFERENTIAL TYPE SETTING MEANS Original Filed Feb. 10, 1942 2Sheets-Sheet 2 FREDERICK GANTNER JOSEPH J. KLOSTERMAN,DEG D BY MARYKLOSTERMAN EXECUTRIX AND JOHN B. GEERS,DECEASED BY JOHN H.MORE

ADMINISRATOR INVENTORS BY%M& M;

THEIR ATTOR NEY Patented ch. 6, 1951 DIFFERENTIAL TYPE SETTING MEANSFrederick Gantner, Dayton, Ohio, Joseph J..Klo'sterinjan, deceased, lateof Dayton, Ohio, by;Mary. Klosterman, execntrik, Dayton, Ohio, and JohnB. Geers, deceased, late of Dayton, Ohio, by J 01in H. More,administrator, Cincinnati, Ohio, assignors to The National CashRegisterCom? pany, Dayton, Ohio, a corporation of Maryland Original applicationFebruary 16, 1942,: Serial No. 430,214. Divided and this applicationMarch 22, 1946, Serial N0. 656,326

6 Claims; (01. 101 -93) The present invention relates to combined cashregisters and adding machines and is particularly directed toimprovements in the type of machine disclosed in United States PatentNo. 2,286,116, issued June 9, 1942, to B. Mwshipley, and is adivision ofthe United States application of E. J. Carey and J. B. Geers,' deceased,Serial Number 430,214, filed February 10, 1942, now Patent Number2,443,652, issued June 22, 1948.

The principal object of this invention is to provide novel'means tocontrol the'printing' of zeros when printing amounts and identifyingnumbers.

A more specific object is to prevent or eliminate the printing of zerosto the left of the highest significant digit in connection with amountsand identifying numbers, and at the same time permit the printing-ofzeros to the right of the highest significant digit in all denominationswhere an amount key or an identifying number key has not been operatedto control the printing in its respective denominations.

With these and incidental objects in view the invention includes certainnovel features of construction and'combinations of partstheessen tialelements of' which are set forth in appended claims a'nd a preferredform or embodiment of which is hereinafter described with reference tothe drawings which accompany and form a part of this specification.

In the drawings:

Fig. 1 is a sectional view'of the machine taken just'to the right of the$1000 amount bank, showing said amount bank, the difierential mechanismand the'printing mechanism associated therewith. This $10.00 bankmechanism is identical with the ten-cent bank mechanism shown in theparent case above mentioned.

Fig. 2 is a detail view of the differential latch for the $10.00 amountbank.

Fig. 3 is 'a diagrammatic view showing a portion of the keyboard andincludes five banks of amount keys and four banks of identifying numberkeys.

Fig. 4 is a left side elevation of the mechanism for controlling theprinting of zeros in one of the amount banks.

Fig. 5 is a front elevation of a portion of the printing mechanismshowing the type wheels and the mechanism for controlling the printingof zeros in connection with the amounts and identifying numbers.

GENERAL DESCRIPTION The present invention is directed to a small,

cash register and adding machine, and particularly'is it directed 'tothe'co'ntrol of theprinting in such machines, which machines'are adaptedfor'use in' suchbusiness concerns as filling sta-.

tion's, beauty shops, dr'y'cleaning establishments drug storesIet'C. d vAs'presently constructed, the machine embody ing" this invention has'fiv'e rows of adding org, amount keys and four. rows'of ledger ornumber. identifying printingkeys. There are also v control keys whichare not shown 'in the"pre sent divisional application. p

When the machine is used a's a cashregister, the fifthor highest orderof amount keysis locked "agaihst depression andlonly, the :four lowerorder rows of amount keys may 'be used for registering amounts, thusproviding a maximum registering; capacity of 99.99. When the machinemused as an addingjma'chine, the fifth row of amount keys is unlocked,thus giving the keyboard a capacity of.$999.99, The difierentiaimechanism for the five .r'o sQ of adding or amount keys, in addition tocon rolling the positioning of"tlie'ir corresponding totalizer wheels(not shown inthis divisional. application), also ,,cont1 ols thepositioning ..of-.,,

corresponding type: wheels, for printing recordss,

uponirecord material. There is alsoa differential mechanism I associated.with each rowtof athe, identifying number keys, which differentiaL,mechanisms are substantially the same as the... amount differentialmechanisms. There, are also. corresponding type wheels associated withthese four rowsof identifying number keys. r Associated withthedifierentials in the print= ing mechanism are zero printingcontrolmechanisms to control the, printing of zeros in, connecm,

tion with theprinting, of amountsnand also in connection with theprinting of identifying numrs,. The zero printing control mechanism forthe identifying control numbers is exactlythesame. as that which isassociated with the amount keys. DETerLED DESCRIPTION MACHINEFRANi'awonK' V The mechanismof the machine is supportedbyo two mainframes (only one of which is shown inv this divisional applicationh Thisframe is. partly shown in Fig. 1. The mechanismof the machine isenclosedpin ,a suitable cabinet 69, a" portion of which is also shown inFig.1.

OPERATING ME'cHANIsi/i H Under normal conditions, a conventional tyjp Iof electric motor""(notsli'own in this 'aepn ation) drives the mainshaft 130 one complete clockwise revolution for each operation of themachine.

KEYBOARD The keyboard of the present machine comprises four rows ofamount keys I90 (Figs. 1 and 3) giving a maximum r-gistering capacity of$99.99; and one row of adding keys I9I, used in conjunction with theamount keys I90 when the machine is used as an adding machine toincrease the capacity of the keyboard to $999.99 as above mentioned.

There are also four rows of identifying number printing keys I92 used inconjunction with the keys I90 and I91 for printing identifying numbers.

The keys H90, I9I and I92 inclusive are not assembled in individualbanks as is the usual custom, but instead all keys are assembled in asingle framework, a portion of which is shown in Fig. 1, which frameworkis removable from the machine as a single unit. This has been fullyillustrated and described in the above mentioned parent applicationSerial No. 430,214. This type of keyboard construction makes forsimplicity and compactness and has all the advantages of the individualbank construction without any of the disadvantages. For example, thekeyboard capacity of the machine may be varied to suit the differentrequirements. This is likewise true of the printing keys I92.

The single unit keyboard framework comprises front and back frames I91and I90 (Fig. 1) a partition plate I99 for each row of keys, one of saidpartition plates also being at each end of the framework, an uppersupport plate 200 and a lower support plate 20I. All of the above platesare secured together by means of tenon and slot connections and by meansof small tie rods 202 which pass through holes in the partition platesI99 and are flattened on each end to secure them in place.

Amount keys Inasmuch as the key mechanism and the associateddifferential mechanism are substantially duplicated for each row ofamount keys, it is believed that a description of the $10.00denomination of amount keys shown in Fig. 1 will sumce for all.

Keys I90 for the $10.00 amount bank are depressibly supported in slotsin the plates 20!) and 20I and are retained against removal by means ofslots therein in cooperation with the corresponding ones of the rods202. Each of the amount keys is normally retained in undepressedposition by a coil spring 205 which extends hori"ontal1y through theentire keyboard assembly, there bein one such spring for all keys oflike numerical order, said springs adapted to be engaged by notches inthe keys of like order. The springs 205 rest on the top surface of thekeyboard plate 200, and when a key is depressed said spring is forced ortensioned downwardly through an opening in said plate adjacent the keystem and when said key is released the spring 205 returns it upwardly toundepressed position as herein shown.

This type of keyboard spring construction is fully disclosed in theUnited States Patent No. 2,210,099, issued August 6, 1940, to B. M.Shipley, to which reference may be had for a more detailed descriptionof the keyboard spring construction.

Each of the rows of amount keys has a de- 4 tent 206 for locking thekeys in depressed position and a control detent 20! for releasing zerostop pawls ZII so that the differential mechanisms may move away fromzero positions and be positioned by the depressed amount keys I90.

Depression of any one of the $10.00 amount keys I causes an angularcamming surface on a projection 208 thereof, in cooperation with theforward edge of a corresponding slot in the detent 206, to shift saiddetent forwardly or to the left, as viewed in Fig. 1, against the actionof a spring (not shown herein) until said projection passes beneath saiddetent whereupon said spring returns the detent rearwardly to lock thedepressed key in depressed position. The amount keys are of flexibleconstruction wherein the depression of a key releases a previouslydepressed key in the same denominational order.

The control plat 201 lies directly beneath the detent 290 and depressionof any one of the amount keys I90 causes the camming surface of theprojection 20% thereon, in cooperation with the edge of a correspondingslot in the plate 201, to shift the plate forwardly and retain saidplate in its forward position while said key is depressed. The forwardend of the plate 207 underlies a rounded nose on the zero stop pawl 2 II and consequentl the forward movement of the plate 201, when an amountkey is depressed, rocks the pawl 2E6 counterclockwise against the actionof a spring, not shown in this division-a1 application.

Such counterclockwise movement of the zero stop pawl 2II rocks a tooth2M thereon out of the path of a bent-over ear M5 on a differential slide2E0, shiftably supported in a framework comprising front and backmembers 2!? and 2I8 secured respectively to inverted U bars 2I9 and 220,in turn secured to partition plates 22I for each order. These partitionplates in turn are mounted on rods 222 and 223 supported by the machinesid frames.

There is one of the differential slides 2H1 for each denominationalorder of amount keys and one for each row of the identifying number keysI92. The differential slide 2I9 has four upward projections, having ears22B bent toward the left, said ears being adapted to cooperate with theodd numbered keys 1, 3, 5 and 7, and said slide likewise has foursimilar projections with ears 225 bent toward the right and arranged tocooperate with the even numbered keys 2, 4, 6 and 8. The stems of thenine amount keys I90 are staggeredthe odd numbered keys being toward theleft and the even numbered keys toward the right.

Depression of an one of the keys I90, except the 9 key, moves the stemthereof into the path of the corresponding ear 224 or 225 andsimultaneously moves the zero stop pawl 2H out of the path of the ear2I5 as previously explained. Initial movement rearwardly of thedifferential slide 2I9 under influence of the amount difierentialmechanism to be later described causes the car 22 1 or 225 to engage thelower forward end of the stem of the depressed key 290 to position theslide 2E6 and the corresponding differential mechanism in proportion tothe value of the depressed amount key I90. When the 9 key is depressedthe slide travels full distance rear- Wardly to the 9 position, which isdetermined by a projection 226 thereon coming in contact with a squarestud 221 in the left-hand partition plate 22I for this particulardenomination.

The slide2l6 is connected to and positions a correspondingdifferentialmechanism in accordance therewith; which differential mechanism opin adifferential segment 232, free on a rod 233 supported bythe machine sideframes. The segment 232 has an angular slot 234 through which extends astud 235 in a differential latch 236 (Fig. 2) free on a stud 23! carriedby'a latch plate 238 free on the rod 233; The stud 235 also ex tendsthrough a slot 239 (Fig. 1) in a latch con-- trol plate 2-i0-free on therod 233, said slot being angularly opposed to the slot 234. A spring 24!urges the segment 232 clockwise and the plate 240 counterclockwise,creating a scissors'action between'the slots 23 and 239 and the stud'235to normally retain the latch 233 in its clockwise position in whichposition a projection on said latch engages a shoulder 242 on theperiphery of a segment 243, also free-on the rod 233.

When thelatch 236 is in engagement with the 1 shoulder 242 an extensionon the plate 238 engages a stud 244- in the segment 2 to form a' drivingconnection between said segment and said plate. The differential drivesegment 243' has a slot therein which engages a stud 245 in adifferential drive arm 245'free on a rod 2:31 supported by the machineside frame. An eccentric 248 (Fig. 1) adjustably connects the arm 245 toa (Fig. 1) adjustably connects the arm 246 to a companion arm 2'49also-free on the rod 241' and said arm 249 and similar arms for theother differential mechanisms are connected by a rod to a differentialcam arm 25l, also free on the rod 241. The cam arm 25| carries rollersand 253, which cooperate, respectively, with th peripheries ofcompanion'plate cams 254 and 255 securedto the main shaft 130. The arm25! is located on the lefthand end of the rod and supports the left-handend of the rod 250, while a similar arm (not' shown) is locat'ed'nearthe right end of said rod 24? and supports'the righthand end of the rod250 and carries rollers which cooperate with companion plate came (notshown) but identical with the cams 25 i and 255. The rod 250 formsan'operating connection be tween the arms 249 for the differential mechanisms of the amount keys i550 and I9! and theidentifving number printerkeys 192, and'the cam arms 25L 3 As previously'explained, the main shaft130 makes one complete clockwise revolution during each machineoperation. When the machine is in home position the slide 2l6 isretained one step'beyond zero as shoWn'in Fig. l, for the purpose ofeffecting transfers in the totalizers which are not shown'in' thisapplication but which are shown and described in the parent applicationmentioned before. At the beginning of the machine operation the cams 254and 255, through the connections here shown, rock the arm 246 a slightdistance clockwise to move the segment 243 clockwise in unisontherewith; which movement is transmitted by 'the latch 236 to the plate238. The stud 235 carried by the latch 236' in cooperation with theslots 234 and-239 in the dif-l 6. ferential segment 232 and the latchcontrol plate 240 carries said parts I clockwise in unison there i with.Clockwise movement ofathe -diiferentialsegment 232 causes the stud 23lin-cooperation with the slot in the arm 230 to shift the slide 2H5rearwardly, to the right asviewed-in Fig.1, from home position to zeropositiong- While the slide 216 is retainedinzero position the transfermechanism for this denominationalorder-is;restored tof,

untripped position :in case it was tripped--in-;-the--precedingoperatiomas is fullyillustratedand de: scribed in theabove-mentioned---parent application.

After the transfermechanislnhas been: re storedjif a key I90 hasbeen-depressed, thejsegment 232 and slide 2l-6 continue their-initia15movement under influence of :thecams254 and" 255 until one of thebent-over ears'224 or -225 comes into contact with the lower endof-.-thestem of the depressed key I90, or in the caseof the9 key,beingdepressed; the slide is arrested by: the stud 221. This obstructsfurther movement)?- rearwardly, of the slide 2l6 -and positions-thesegment 232 in accordance with-the value-of the depressed amount keyi90.'- Stopping the 'seg-' ment 232 causes the-stud 235 to -'rideup=the,'ini.-..

clined surface of theslot 234 against theaction driving segment 243 andsimultaneously, to engage a tooth 258 on said latch with thecorresponding one of a series of alining notches 259 in an arouatesurface of the plate 22l, thesenotches 259- corresponding to thedifferent positions ofthe slide 2l6 and the segment 232.. Suchdisengaging V, of the latch 236'disconnects the latch plate238 from thedrive segment 243 to position the differential mechanism in accordancewith the value. of the depressed amount key I90, said segment 243 beingfree to complete its initial movement clockwise. When the latch 236(Fig. 2) is disengaged from the shoulder 242, as explained above, andengaged with the corresponding alining notch 259, an arcuate surface 260on the segment 243 passes beneath the extension of said latch to locksaid latch and the differential mach-'- anism in set position. I

The upper end of a beam 26! (Figs. 1 and2) is. pivotally connected tothe latch plate 238 and when the arm 245 nears'the terminus (if its ln-'itial movement clockwise a roller 28! carried-- thereby engages anarcuate surface 282;on the forward edge of said beam 26| and forces acurved surface on the inside edge of said beam into engagement with theperiphery of a hub 283 free on the rod 233 to position saidlbe'am 2 6!in accordance 'with the value of the depressed amount key I90.

The d fferential positioning of the beam 26| is transmitted to theprinting mechanism in the'foh lowing manner:

The beam 26! is connected by a link 262 to an arm 228 secured to a shaft229 supported by the machine framework. This shaft 229 thereforereceives the differential movement under control of the depressed key inthe amount bank being described. which in this particular instance is.the $10.00 amount bank. Als0fsecured,to the shaft 229 is an arm 3B2(Fig. 4) connected bya link 350 to a segment 496, which segment mesheswith the external teeth of an'internal-external gear 491, the internalteeth of whigh bear on the periphery of a disk 3 free on a bushing 3|2,fA locating rod 3l4 which passes through'jtlie en tire type wheel gearassembly is aslip fit in'tlie.

locating hole in the disk 3 and locates said disk 3 so that a cut-awayor clearance portion thereof is opposite a pinion 3I5 which meshes withthe internal teeth of the gear 497. The pinion 3I5 is rotatablysupported by tenons on each side thereof, in cooperation with borings inseparating plates supported by the bushing M2 and the-rod BM in exactlythe same manner as the disk 3| I. A square hole in the pinion 3I5 freelyengages a square shaft 3| I and the shaft likewise freely engagesanother pinion similar to the pinion 3I5 which meshes with the internalteeth of an internal-external gear 3I8 (Figs. 1 and 5) similar to thegear 49?, the external teeth on the gear 3I8 meshing with and driving atype wheel 3 I 9 for the $10.00 denomination.

The internal-external gear mechanism for transmitting the positionin ofthe differential mechanism to the type wheels, shown in Figs.

1, 4 and 5, is of the type fully illustrated and describedin the'patentto Walter J. Kreider, No. 1,693,279, dated November 27, 1928.

From the above description it can be clearly seen that the type wheel3I9 associated with the $10.00 bank of keys is differentially positionedin accordance with the value of the key depressed, through thedifferential mechanism, the beam 26I, and linkage from the beam to thesegment 496, and thence through the internal-external gear drivemechanism shown in Figs. 4 and 5.

ZERO ELrMIi-m'rIoN MECHANISM Referring to Fig. 2, the $1 and the $10rows of keys I90, the $100 row of keys and the four rows of identifyingnumber printing keys I 92 are provided with zero elimination mechanismfor preventing the printing of zeros when no keys are depressed in thehigher orders, and for permitting the printing of Zeros in the lowerorders when a key is depressed in the adjacent higher order. The unitsof cents row of keys and the tens of cents row of keys are not providedwith zero elimination mechanism as it is desirable that the zeros printin these two orders at all times. The zero elimination mechanism for the$10 amount bank I9I is shown in Fig. 4, and inasmuch as the zeroelimination mechanism is substantially duplicated in the other bankswhere it is used, it is believed that a description of the mechanismshown herewith will suffice for all.

It .will be recalled that the keys IQI for the $10.00 bank haveassociated therewith a differthe frame (Fig. 5).

a plate ,502 mounted for oscillating movement around the axis of thegear 49'! by means of two curved slots therein, in cooperation withstuds 503 and 504 secured in a plate 46'! secured to stant displacementdevice for operating the zero elimination mechanism.

The plate 502 carries a stud 5II upon which is pivoted a pawl 5i 2 urgedcounterclockwise by-a' spring 5I3 to normally maintain a rounded pro--jection 5M thereof in contact with the lefthand surface of a zeroelimination pawl 5i 5.

515 in the plate 461 and said pawl is urged counter-clockwise by atorsion spring 5:7 to normally maintain an extension 5 I8 thereof incontact with 'a camming surface 5I0 on the periphery of the gear 497.

When no key is depressed in the $10 amount bank the segment 496 and gear49'! remain in zero position, as here shown. counterclockwise movementof the lever 506 and the plate 502 under influence of the cam groove 509causes the rounded extension 5 I4 of the pawl 5| 2 to ride away from theinclined surface of the pawl 5I5 and permit the spring 5I3 to engage thetooth of the pawl 5l2 with the left-hand shoulder of a notch 520 in theperiphery of the gear 49?. After the pawl 5I2 engages the notch 520, itmoves the gear 49'? and the type wheel 3I9 for the $10 order amount bankcounterclockwise and clockwise, respectively (Figs. 1 and 4) in unisontherewith from zero position to a position beyond zero, which is blank,or a non-printing position, to eliminate the printing of zero in thisparticular order.

When the gear 401 is in non-printing position the periphery of the widetooth 498 is in the path ential mechanism and a driving connection fromthe differential to tlre $l0.00 type wheel, which mechansims are shownin Figs. 1, 4 and 5. driving connection to the type wheels involves thesegment 295 and the internal-external drive gear49'l.

When the segment 495 and the gear 00? are in zero position, as shown inFig. i, a wide space in The der the influence of the differentialmechanism 1 the periphery of said segment cooperates with a wide tooth000 on the gear segment 09?. The wide space in the segment 005 permitsthe gear 091 to be moved counterclockwise independently of the segment,the wide tooth. :58 therein passing out of mesh with the wide space inthe segment. When the gear 491 is moved out of zero position for thepurpose of eliminating the printing of zeros, the periphery of the widetooth 398 moves into the path of a large tooth 550 on the segment 496 toblock counterclockwise movement of said segment, and thereby lock saidsegment in zero position.

The,v gear 49'! has a shoulder 550 (Fig. 4) ar ranged to be engaged by abent-over ear 5! on of the tooth 499 of the segment 496 to retain saidsegment in zero position and a hook 52I on the gear 491 moves over theextension 5I8 to lock the pawl 5 I 5 in ineffective position, as hereshown. Return movement clockwise of the lever 506 and the plate 502causes the ear 50l to engage the shoulder 500 to return the gear 491 tozero or normal position, as here shown, after the printing mechanism hasfunctioned.

When one of the keys I9I in the $10.00 order amount bank is depressed,the segment 496, un-

for said amount bank, moves counterclockwise out of zero positioncarrying the gear 49'! clockwise in unison with it. When the gear 49'!moves away from zero position while traveling in a cockwise direction,the camming surface 5I9 thereon, in

cooperation with the extension 5I8 of the pawl 5 I 5, rocks said pawlcounterclockwise against the action of the spring 5. As the pawl 5I5moves counterclockwise under influence of the camming surface 5I9, sa dpawl in cooperation with the extension 5 I 4 rocks the pawl 5 I 2clockwise against the action of the spring5l3 to move and retain thetooth thereof away from the periphery of the gear 09'! so that saidtooth will be hed out of engagement with the notch 520 duringoscillating movement of the plate 502, as explained above.

The pawl 5l5 for the $10 amount bank has a A link 505 pivotally con- Thepawl v 555 is rotatably supported by a stationary stud bent-overprojection 522 which overlies the pawl M for the next lower' order (Fig.5'). Consequently counterclockwise movement of the pawl 5|5 for the$10.00 order, under influence of the camming surface'5l9, rocks the pawl5|5 for the next lower order counterclockwise in unison therewith torock and retain the tooth of the pawl 5l2 for said lower order out ofthe path of thenotch 520 of the gear 491 for said lower order so thatsaid gear and the'printing mechanism positioned thereby will remain inzero position, as it is'desirable to recordthe zeros in the lower orderwhen a key in ahi' her order is depressed.

As previously explained, the $1.00 and the $100 amount banks and theoverflow bank for the $100 bank, and all four of the identifying ledgernumber banks I 92 have a zero. elimination mechanism, which issubstantially identical with that shown in F g. 4, and which functionsexactly like said zero elimination mechanism for con rolling the'printing of zeros in their respective banks. However, only one plate 502is provided, the eat 50! of whichextends. over all of the gears 491, sothat when this plate is restored the ear 591 will engage the shoulders500 of a l of the gears 49 1 which were moved to the r respectivenonpr-int positions and restore them to normal positions. The units andtens of cents banks I90 are not provided-with zero eliminationmechanism, as it is desirable that the zeros of these banks print at alltimes.

A plate 495 (Fig. 5) secured to the threaded ends of the studs5U3 and504, ass'sts the plate 461 in holding the zero elimination mechanism inplace. The plate 495 has a curved slot (not shown herein), en aged by aroler on the stud 5!! to assist in guiding the plate 502 in itsoscillating movement.

While the form of mechanism shown and described here 'n is admirablyadapted to fulfill the objects primarily stated, it is to be understoodthat it is not intended to confine the invention to the one form orembodiment shown herein, for it is susceptible ofembodiment in variousforms all coming Within the scope of the claims which follow. a

What is claimed is:

1. In a machine of the character described, the combination of a typecarrier for recording numerals; a segmental-gear operatively connectedto the type-carrien-said segmental gear having a shoulder thereon;--differentially adjustable means coactingwiththe segmental gear to movethe'type carrier to various-positions, including zero position; a devicehaving an invariable movement each machine operation; an elementconnectedto and-operated-by the device; acontrol surface on thesegmental gear; and a member co acting with the controlsurfaceand theelement, said member effective when the segmental gear is positioned atzero by the differentially adjustable means to permit the element toengage the shoulder and move said gear and the type carrierindependently of the differentially adjustable means to a positionbeyond the operating scope of said differentially adjustable means, tolocate said type carrier in a non-recording position, said membereffective when the segmental gear is positioned in other than zeroposition by the differentially adjustable means, to move and retain theelement out of coacting relationship with the shoulder.

2. In a machine of the class described, the combinationiof type carriersconstructed'and ar ranged to record numerals; means, including segmentalgears, operatively connected to the type carriersydifferentiallyadjustable means coacting with the segmental gears to move the typecarriers to various numerical positions including zero position; adevice having an invariable movement each machine operation; elementsconnected to and operated by the device and coacting with the segmentalgears; means actuated and controlled by the segmental gears and coactingWith the elements, said means effective, when said segmental gears andthe type carriers are positioned in zero recording position, to permitsaid elements to coact with and move said se mental gears and saidtypecarriers independently of the differentially adjustable means toposition said type carriers in non-recording position,- said meanseffective when thesegmental gears and the type'carriers are positionedin other than zero recordingposition to move and retain the elements outof coacting relationship with-said segmental gears; and 'means connectedto and operating in unison with the deviceand coacting. with thesegmental gears, to. restore said seg-Q mentalgears and the typecarriers from non-recording position to zero recording position, after.

numeral recording hasbeen eifected toin turn cause the means actuatedand controlled by the movement each machine operation; an elementconnected to and operating in "unison with the connected to andoperating in .unison with the device; yieldable means normally effectiveto urge. the element-into the'path of one of the shoulders; a memberactuated by the control surface and coacting with the element, when thesegmental gear is: positioned'at zero, to permit the element to engage.theone shoulder under infiuenceof the yieldable means and move said;segmental gear and the type carrier independently of the differentiallyadjustable means to a position beyond the scope of operation of saiddifferentially adjustable means to locate said type carrier in anon-recording position, said member actuated by the control surface andcoacting with the element, when the segmental gear is moved to' otherthan zero position, to move and retain said element out of coactingrelationship with the one shoulder; and means device to engage the othershoulder and restore the segmental gear and type carrier fromnonrecording position to zero position, to in turn cause the member torestore the element into the path of the one shoulder.

4. In a zero printing control mechanism for accounting machines, thecombination of a numeral printing type carrier; a segmental gearoperatively connected to the type carrier; a differentially adjustablemeans; means connected to and positioned by the differentiallyadjustable means and normally coacting with the segmental gear toposition it and the type carrier in various numeral printing positions,including zero printing positioni-two shoulders on the segmental gear; acamming surface on the segmental gear;

11 a device having an invariable movement each machine operation; anelement connected to and Operating in unison with the device; yieldablemeans to urge the element into the path of one of the shoulders; amember actuated by the camming surface and coacting with the element,when the segmental gear and the type carrier are located in zeroprinting position, to cause said element to engage the one shoulder,under influence of the yieldable means, and move said segmental gearindependently of and out of coacting relationship with the meansconnected to and positioned by the differentially adjustable means, tocaus said segmental gear to move the type carrier to a non-printingposition, said member actuated by the camming surface and coacting withthe element, when the segmental gear and the type carrier are in otherthan zero printing position, to move and retain said element out of thepath of the one shoulder to prevent additional movement of saidsegmental gear and the type carrier; and means connected to andoperating in unison with the device to engage the other shoulder andrestore the segmental gear and the type carrier to zero printingposition, after printing has been effected, to in turn cause the memberto restore the element into the path of the one shoulder.

5. In a machine of the class described, the combination of a typecarrier for printing numerals; a segmental gear operatively connected tothe type carrier; differential means including a gear sector normallymeshing with the segmental gear to position said segmental gear and thetype carrier in various numeral-printing positions including zeroprinting position; a device having an invariable movement each machineoperation; an element mounted on and operated by the device and coactingwith the segmental gear when it and the type carrier are positioned inzero printing position to move said segmental gear out of mesh with thegear sector to position said segmental gear and the type carrier in anon-printing position, said device efiective to restore said segmentalgear into mesh with the gear sector after printing has been effected;and control means actuated by the segmental gear when it and the typecarrier are moved to other printing positions than zero printingposition and coacting with the element to render said elementineffective to coact with said segmental gear.

6. In a machine of the class described, having a plurality ofdenominational orders and a numeral-printing type carrier for eachorder, the combination of a segmental gear for each order operativelyconnected to the corresponding type carrier; differentially adjustablemeans for each order coacting with the segmental gears to posi tion themand the type carriers in various numeral-printing positions includingzero printing position; zero stop means for each order coacting with thedifferentially adjustable means to position the segmental gears and thetype carriers in zero printing position; numeral keys for each order torender the corresponding zero stop means ineffective and to coact withthe differenv tially adjustable means to position the segmental gearsand the type carriers in various numeralprinting positions; a devicehaving an invariable movement each machine operation; elements mountedon and operable by the device and coacting with the correspondingsegmental gears when they are located in zero position to move saidsegmental gears and the corresponding type carriers to a non-printingposition; means operated by the device and coacting with the segmenj talgears to restore them and the corresponding type carriers fromnon-printing position to zero printing position, after printing has beencompleted; a control surface on each of the segmental gears; a memberfor each denominational order constructed and arranged to be actuated bythe corresponding control surfaces when the segmental gears are moved toother printing posi tions than zero printing positions, said memberswhen actuated coacting with the corresponding elements to render themineffective to cooperate with the corresponding segmental gears; andconnections between the members, said connections effective when ahigher order member is actuated by the corresponding control surface tosimultaneously actuate the lower order members to cause thecorresponding lower order segmental gears and type carriers to beretained in zero printing position.

FREDERICK GANTNER. MARY KLOSTERMAN,

Escecatrix of the Estate of Joseph J. Klosterman,

Deceased.

JOHN H. MORE, Administrator of the Estate of John B. Geers,

Deceased.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

